Tm


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Tm,

chemical symbol for the element thuliumthulium
[from Thule, an ancient name for Scandinavia], metallic chemical element; symbol Tm; at. no. 69; at. wt. 168.93421; m.p. about 1,545°C;; b.p. 1,947°C;; sp. gr. 9.3; valence +3. Thulium is a soft, malleable, ductile, lustrous silver-white metal.
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Tm

(chemistry)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

TM

(1)

TM

(2)
A formal database specification language.

tm

(networking)
The country code for Turkmenistan.

Heavily used for vanity domains because it looks like the abbreviation for "trademark".
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